diff options
| -rw-r--r-- | proto/babel/packets.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/proto/babel/packets.c b/proto/babel/packets.c index e9c6d51d..768858d0 100644 --- a/proto/babel/packets.c +++ b/proto/babel/packets.c @@ -40,7 +40,7 @@ struct babel_tlv_ack { struct babel_tlv_hello { u8 type; u8 length; - u16 reserved; + u16 flags; u16 seqno; u16 interval; } PACKED; @@ -104,8 +104,12 @@ struct babel_tlv_seqno_request { } PACKED; -#define BABEL_FLAG_DEF_PREFIX 0x80 -#define BABEL_FLAG_ROUTER_ID 0x40 +/* Hello flags */ +#define BABEL_HF_UNICAST 0x8000 + +/* Update flags */ +#define BABEL_UF_DEF_PREFIX 0x80 +#define BABEL_UF_ROUTER_ID 0x40 struct babel_parse_state { @@ -310,6 +314,11 @@ babel_read_hello(struct babel_tlv *hdr, union babel_msg *m, struct babel_tlv_hello *tlv = (void *) hdr; struct babel_msg_hello *msg = &m->hello; + /* We currently don't support unicast Hello */ + u16 flags = get_u16(&tlv->flags); + if (flags & BABEL_HF_UNICAST) + return PARSE_IGNORE; + msg->type = BABEL_TLV_HELLO; msg->seqno = get_u16(&tlv->seqno); msg->interval = get_time16(&tlv->interval); @@ -500,13 +509,13 @@ babel_read_update(struct babel_tlv *hdr, union babel_msg *m, msg->plen = tlv->plen; msg->prefix = ipa_from_ip6(get_ip6(buf)); - if (tlv->flags & BABEL_FLAG_DEF_PREFIX) + if (tlv->flags & BABEL_UF_DEF_PREFIX) { put_ip6(state->def_ip6_prefix, msg->prefix); state->def_ip6_prefix_seen = 1; } - if (tlv->flags & BABEL_FLAG_ROUTER_ID) + if (tlv->flags & BABEL_UF_ROUTER_ID) { state->router_id = ((u64) _I2(msg->prefix)) << 32 | _I3(msg->prefix); state->router_id_seen = 1; |